According to investigation, the event was caused by a mechanical misalignment of the bim components at the sample tube picking position.Service personnel onsite examined the module and found out that the distance between the belt of the 16mm diameter tubes was slightly narrow which would create undesired friction between the tube and the belt making the tube go upwards.The robot went to pick up a 13x100mm tube while a 16x100mm tube interfered in the robots path causing the tube uncapping and sample spillage.The spillage reached the track where other uncapped tubes may pass through potentially causing cross contamination.The investigation did not provide any evidence of real cross contamination.No discrepant test results potentially caused by sample cross contamination have been identified.The module and the track are covered by protective shields, the operators could not come in direct contact with the dropped sample.The bulk input module generated the error message 12c9 (sample tube presence sensor error) once the tube sensor did not detect the sample tube loaded in the carrier.The module stopped working and the user intervention on node was required to recover the error condition.The operators were made aware of the event.Service personnel adjusted the belts distance.The module was monitored during the following weeks and no other occurrences have been observed.The bulk input module is now working according to specification.No further actions are needed.
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